Vacuum cleaner



FIG. 1 is a perspective view of a vacuum cleaner from the front and one side showing our new design;

FIG. 2 is a front view thereof;

FIG. 3 is a rear view thereof;

FIG. 4 is a side elevational view thereof taken from the side in FIG. 1;

FIG. 5 is a side elevational view thereof taken from the side opposite in FIG. 4;

FIG. 6 is a top view thereof; and,

FIG. 7 is a bottom view thereof. 

The ornamental design for a vacuum cleaner, as shown and described. 